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6.2. COMPONENTS TESTING
6.1.3 Test Signal generator
When verifying the operativeness of the system and its equalization, it is essential to have a signal
generator that can at least generate pink noise. If measurement software is used, this function is usually
included, but an inexpensive alternative is to have a CD with pre-recorded pink noise.
6.1.4 Real time analyzer and transfer function analyzer
For time alignment and system setup, it is advisable to use instrumentation for the measurement of the
audio output of the system. Very often, system equalization is adjusted with the use of a Real-Time
analyzer. However, the information supplied by this type of instrument is incomplete and insufficient for
the proper setup of a complex system such as a vertical array, and is quite useless in the phase alignment
of such a system. It is necessary to use a measurement tool that provides monitoring of the system with
respect to frequency and phase.
proven and accepted standard that is quite functional and cost-effective for the setup and alignment of
professional systems.
6.1.5 Measurement tools for distance and angle
For time alignment, but also simply for the correct mounting of the system, it is necessary to have on
hand proper tools for measuring distance and angle.
A laser range-finder is very useful for rapid and precise measurement of distances, but such tools
have their limits, especially in the open and in full daylight. When an optical instrument is not available
or not usable, a tape-measure roll is a valid and essential tool.
Very often trigonometry is of great help, and can help you determine the measurement of unknown
distances with given information from other easily measured distances. Please refer to the appendix of
this manual for a quick review of trigonometric functions which are useful for system alignment.
For the verification of the correct pointing of the system, it is useful to have some sort of inclinometer
to fix to the flying bar and correct any difference in angle to that simulated in the LAC software and
ascertain the changes in coverage. We also remind you of the importance of always having a bubble-
level or, better, a laser level.
6.2 Components testing
A periodic procedure that should be followed when the system is not in use, is the verification of the
condition and functionality of every element in the system. It is particularly important to inspect the
suspension system for any defect or crack.
In the case of malfunction, it is possible to verify the state of the electro-acoustic components in the
system. The simplest tests to carry out are measurements of frequency response and impedance. It
is not within the scope of this manual to go into detail about the execution of these measurements, but
both are possible with the SmaartLive software application or with dedicated electro-acoustic measure-
ment equipment such as CLIOwin
only the verification of its correct operation
order to perform any preventive maintenance that proves necessary. For further information on tech-
niques and methods of measurement and analysis, it is possible to contact PROEL technical support at
sound.proelgroup.com.
3
A description of the meaning of frequency and phase monitoring is provided in appendix.
4
This manual does not advise one measurement system rather than another. SmaartLive was chosen as it is widely used. The
appendix lists a series of alternative options available on the market.
5
http://www.cliowin.com/
6
And also a memorization of the measurements, so to have a record.
3
. Among professionals in the field, the software SmaartLive
5
. Periodic measurement of the system between uses permits not
6
, but also the physical examination of its state of wear in
78
6. Operating guide
4
is a
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